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S-VHS signals
S-VHS signals are separate Y/C video signals
from the S-VHS and Hi-8 recording standards.
The luminance signals Y (black and white) and
chrominance signals C (color) are recorded
separ
ately on the tape. This provides the better
picture quality than with standard video (VHS
and 8mm) where the Y/C signals are combined
to
provide only one video signal.
S/PDIF (SPDIF) (Sony/Philips Digital Interface)
A standard audio-le transfer-format that was
dev
eloped jointly by Sony and Philips. S/PDIF
allows the transfer of digital audio signals from
one device to another, without the need to
convert rst to analog. This prevents the quality
of
the digital signal degrading during transfer to
analog.
Sampling rate
The precision with which a digital le describes
the analog sound it represents. Basically, a lower
rate produces les that sound worse and take
up
less drive space than those with a higher
rate. CDs have a sampling rate of 44.1kHz,
and DAT machines have a sampling rate of
48kHz. MiniDisc player/recorders with a built-in
sampling rate converter can handle both rates.
SD
Secure
Digital. A type of memory card with a
ash memory.
Sensitivity
Volume that a speaker offers for a specic
v
oltage input, expressed in decibels per watt
(dB/W).
Shufe
A feature that plays audio les (tracks) in
r
andom order.
Signal to noise ratio
Represents
the difference between the level of
the audio signal, and any interference. The larger
the gure, the purer the sound.
FM
stations include on a sub-carrier signal
within their normal broadcast signal. Some RDS
equipped tuners can even override with trafc
aler
ts or emergency broadcasts, during playback
of other media - CD MD, or cassette. There are
other useful features too, many of which are
offered by the growing number of RDS stations.
Region code
A
system that allows discs to be played only in
the region designated. This unit only plays discs
that have compatible region codes. You can nd
the
region code of your unit on the product
label. Some discs are compatible with more
than one region (or ALL regions.)
RF (radio frequency)
An
alternating current or voltage with a
frequency (or carrier wave) above about
100kHz.
It is called radio frequency because
these frequencies have a capacity to be radiated
as electromagnetic waves by radio (and
television) stations.
RGB signals
RGB signals are the three video signals, Red,
Green and Blue, which make up a high quality
picture
.
Rhapsody®
Rhapsody®
is an on-line music service that
offers streaming on-demand access to its library
of digital music.
Rip (ripping)
Using a software program that “grabs” digital
audio
from a compact disc and transfers it to a
computer hard drive. The integrity of the data
is preserved, because the signal does not pass
through the computer sound card, and need
not be converted to an analog format. The
digital-to-digital transfer creates a WAV le that
can then be converted into an MP3 le.
RMS (Root Mean Square)
A
formula that provides a reasonably accurate
means to measure and compare continuous
AC power. The use of this measure is preferred
when matching system components, like
ampliers and receivers.
EN
wac7500_um_01eng.indd 41 14-08-08 16:30:00